While May is National Bike Month, the city of Boulder, Colorado, is keeping the fun going with its own Walk and Bike Month in June. Since 1977 the event has grown from a single day to a full month with more than 70 free activities, including mountain bike rides, running races, scavenger hunts, historical bike tours and more. It all ramps up to Bike to Work Day on June 25, with breakfast stations fueling hungry riders on their way.

The whole shebang is coordinated by Community Cycles, a local nonprofit that educates for safe bicycle use. It is sponsored by Go Boulder, a division of the city transportation department focused on reducing single occupancy car usage, along with more than two dozen other corporate sponsors.